Traction in Thermal Elastohydrodynamic Lubrication of Rough Surfaces

[+] Author and Article Information
L. Chang

Department of Mechanical Engineering, School of Engineering and Science, The Hartford Graduate Center, Hartford, CT 06120

J. Tribol 114(1), 186-191 (Jan 01, 1992) (6 pages) doi:10.1115/1.2920859 History: Received January 31, 1991; Revised August 01, 1991; Online June 05, 2008


This paper studies the traction behavior of elastohydrodynamically lubricated line contacts between two rough surfaces. The study uses a thermal micro-elastohydrodynamic-lubrication (micro-EHL) model and obtains traction coefficients for a wide range of operating conditions and for film parameters as small as 1.50. The simulation results suggest that the traction is generally insensitive to the roughness structure and magnitude as long as the contact maintains a full EHL film. The results also indicate clearly that the lubricant squeeze induced by the motion and interaction of rough surfaces significantly affects the numerical solutions to thermal micro-elastohydrodynamic lubrication.

Copyright © 1992 by The American Society of Mechanical Engineers
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